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Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
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Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.
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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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There are approximately 3 million unintended pregnancies in the United States each year.